Poljica, Croatia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Poljica, Dalmatia, Croatia, is known for the historic Poljica Republic and its proximity to the scenic Cetina River. The best time to travel to Poljica, Croatia, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures around 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!